Following days of upheaval in NSW politics after former premier Gladys Berejiklian resigned on Friday, Mr Perrottet was elected Liberal leader in a party room meeting on Tuesday.

Dr Suttie, who teaches medical ethics at the UNSW Rural Medical School in Wagga, said it was "really exciting" to see Mr Perrottet, their parents' third child, win the leadership ballot.

"He has worked very hard in his life, he has pretty much dedicated his life to public service," she said.

"He is married to my husband's sister, so the kids are double cousins. They are very, very close to us. He has six kids and we have six kids all about the same age.

"They come down for weeks as a time, at least the kids do as he doesn't have very much time off."

Dr Suttie said Mr Perrottet had a "really beautiful family" and would bring a lot of skills to the role as Premier.

Liberal Party Wagga branch president Julia Ham said she hoped Mr Perrottet would bring strong economic growth, tax reform and financial assistance for councils in the post-lockdown period.

"We are, of course, deeply saddened by Gladys going. However, Dominic is young, dynamic, full of enthusiasm and we see it as a really positive reset for the NSW Liberal Party," she said.

"We had Dominic speak at the Wagga branch of the Liberal Party last year as Treasurer and I'm just excited about someone who's interested in tax reform."

In other news

Wagga MP Joe McGirr said he was looking forward to meeting with Mr Perrottet, along with other independent MPs, about their support for the government.

"I think it's important we have those discussions and that we have stable and effective government, particularly with the COVID situation," Dr McGirr said.

"I have personally congratulated both Dominic and [new deputy Liberal leader] Stuart Ayres and wished them well."

The NSW National Party is due to meet on Wednesday to elect a new leader and Deputy Premier after John Barilaro resigned on Monday.

Wagga-based Nationals MLC Wes Fang said Mr Perrottet was a "good friend" to the region.

"It was a decision for the Liberal party room but in this instance I think it was an absolutely fantastic choice. We know that Dominic Perrottet is an very capable and talented individual," he said.

Opposition leader Chris Minns said Labor had offered cooperation during the pandemic but he expected "big differences" with Mr Perrottet as NSW moved into economic recovery.

Our journalists work hard to provide local, up-to-date news to the community. This is how you can continue to access our trusted content: